QSORT(3) Linux Programmer's Manual QSORT(3)
NAME
qsort - sorts an array
SYNOPSIS
#include<stdlib.h>
voidqsort(void*base,size_t nmemb,size_t size,
int(*compar)(constvoid*,constvoid*));
DESCRIPTION
The qsort() function sorts an array with nmemb elements of size size.
The base argument points to the start of the array.
The contents of the array are sorted in ascending order according to a
comparison function pointed to by compar, which is called with two
arguments that point to the objects being compared.
The comparison function must return an integer less than, equal to, or
greater than zero if the first argument is considered to be respec-
tively less than, equal to, or greater than the second. If two members
compare as equal, their order in the sorted array is undefined.
RETURNVALUE
The qsort() function returns no value.
CONFORMINGTO
SVID 3, POSIX, BSD 4.3, ISO 9899
SEEALSO
sort(1)
GNU 1993-03-29 QSORT(3)